The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 24, 2004
Filed:
May. 03, 2002
Peter Bruck, Zweibrücken, DE;
Thorsten Hillesheim, Saarbrücken, DE;
Hydac Fluidtechnik GmbH, Sulzbach/Saar, DE;
Abstract
A valve, especially a pressure control valve, includes a housing ( ) with a pump connection (P), an appliance connection (A) and a tank connection (T). A piston ( ) controlled by a magnet armature ( ) is guided inside the housing ( ) of the valve. The vavle is provided with a hydraulic damping device ( ) having a damping chamber ( ) in fluid communication with appliance connection (A) through a throttle ( ). The pump connection (P) or the tank connection (T) is selectively joined to the appliance connection (A) via a connecting line ( ) according to the position of the piston ( ). This valve improves upon known control valves so that the control valve remains stable in terms of behavior, especially with regard to permanent oscilliations.